California CAASPP Grade 4 Math Free Worksheets: 72 Skill-by-Skill Worksheets You Can Print Today

Fourth grade is the year the pieces of math start connecting to each other. Multiplication is no longer just a fact table — it becomes the tool for multiplicative comparison, for area, for solving a word problem in two or three moves. Division and multiplication start working as a pair. Fractions stop being pictures and become numbers with a place on the number line, numbers you can compare and add. And decimals show up for the first time, quietly linking to the fractions a student already knows. The arithmetic is recognizable; what is new is how much of it has to work together.

For a nine- or ten-year-old, that is a real shift in thinking, and it can feel like a lot. But fourth-grade math is built in a sensible order, and a student who practices each skill until it is reliable usually finds the connections start forming on their own.

This is also, in the truest sense, a foundational year. The multi-digit multiplication and division a student gets fluent with now is the same machinery fifth grade uses for fractions, area, and longer problems. The fraction and decimal work this year is the soil that ratios, percents, and eventually algebra grow out of. Practice put in during fourth grade is not spent on fourth grade alone — it is laid down beneath every math year that comes after.

These worksheets were made to support that work. Whether your fourth grader is in Los Angeles, San Diego, Fresno, or Sacramento, each one focuses on a single skill and gives enough practice to make it dependable.

What’s on this page

This page offers 43 single-skill PDFs, each aligned to the California Mathematics Standards at Grade 4. Every file targets exactly one skill, so a student working on multiplicative comparison is not also being quizzed on symmetry, and a student practicing decimal notation is not pulled into perimeter.

Each PDF begins with a one-page Quick Review — the skill explained plainly, with a fully worked example. Then 20 practice problems that build from easy to hard, plus 4 word problems that put the skill into a real-world setting. The last page is a student-facing answer key, with short, clear explanations a fourth grader can read alone and learn from.

Place Value & Multi-Digit Numbers

• Understanding Place Value Relationships — [4.NBT.A.1] each place is ten times the one to its right
• Reading and Writing Multi-Digit Numbers — [4.NBT.A.2] standard form, word form, and expanded form
• Comparing and Ordering Multi-Digit Numbers — [4.NBT.A.2] use place value and the symbols >, <, and =
• Rounding Multi-Digit Numbers — [4.NBT.A.3] round to any place from tens to hundred-thousands

Multi-Digit Arithmetic

• Adding Multi-Digit Whole Numbers — [4.NBT.B.4] the standard addition algorithm, with regrouping
• Subtracting Multi-Digit Whole Numbers — [4.NBT.B.4] the standard subtraction algorithm, including across zeros
• Multiplying by a One-Digit Number — [4.NBT.B.5] multiply up to four digits by a single digit
• Multiplying Two Two-Digit Numbers — [4.NBT.B.5] the area model and the standard algorithm side by side
• Dividing with Remainders — [4.NBT.B.6] divide and name the leftover as a remainder
• Finding Factors and Multiples — [4.OA.B.4] list every factor of a number and its first multiples
• Prime and Composite Numbers — [4.OA.B.4] exactly two factors means prime; more means composite

Operations & Problem Solving

• Multiplicative Comparisons — [4.OA.A.1] read ‘4 times as many’ as a multiplication statement
• Multiplicative Comparison Word Problems — [4.OA.A.2] solve ‘times as many’ stories with multiplication or division
• Multi-Step Word Problems — [4.OA.A.3] two or more operations in one real-world problem
• Interpreting Remainders — [4.OA.A.3] decide what the leftover means — round up, drop it, or use it
• Number and Shape Patterns — [4.OA.C.5] follow a rule and find the next terms in a pattern

Fractions

• Equivalent Fractions — [4.NF.A.1] the same amount written with different numbers
• Comparing Fractions — [4.NF.A.2] compare fractions with unlike denominators using benchmarks
• Adding Fractions with Like Denominators — [4.NF.B.3a] add the numerators, keep the denominator
• Subtracting Fractions with Like Denominators — [4.NF.B.3a] subtract the numerators, keep the denominator
• Decomposing Fractions — [4.NF.B.3b] break a fraction into a sum of unit fractions
• Adding and Subtracting Mixed Numbers — [4.NF.B.3c] work with the whole and fraction parts, including regrouping
• Multiplying a Fraction by a Whole Number — [4.NF.B.4b] repeated addition of a fraction, written as multiplication
• Fraction Word Problems — [4.NF.B.3d] real-world stories that call for adding or subtracting fractions

Decimals

• Fractions with Denominators 10 and 100 — [4.NF.C.5] rename tenths as hundredths and add the two
• Decimal Notation for Fractions — [4.NF.C.6] write tenths and hundredths as decimals, and back
• Comparing Decimals to Hundredths — [4.NF.C.7] line up the place values and compare with >, <, =
• Adding Decimal Fractions — [4.NF.C.5] add decimals to the hundredths place

Measurement & Data

• Converting Measurement Units — [4.MD.A.1] change from a larger unit to a smaller one
• Measurement Word Problems — [4.MD.A.2] length, weight, volume, and time in real situations
• Area of Rectangles — [4.MD.A.3] length times width — the space inside a rectangle
• Perimeter of Rectangles — [4.MD.A.3] the distance all the way around a rectangle
• Area and Perimeter Word Problems — [4.MD.A.3] decide whether a problem needs area or perimeter
• Line Plots with Fractions — [4.MD.B.4] read and use a line plot of fraction measurements

Angles

• Angles as Fractions of a Circle — [4.MD.C.5] a full turn is 360 degrees — find a fraction of it
• Measuring Angles with a Protractor — [4.MD.C.6] name angles acute, right, or obtuse by their measure
• Drawing Angles with Given Measures — [4.MD.C.6] know what a given degree measure should look like
• Adding and Subtracting Angles — [4.MD.C.7] an angle split into parts — find the missing part

Geometry

• Points, Lines, Rays, and Angles — [4.G.A.1] the building blocks of geometry and how to tell them apart
• Parallel and Perpendicular Lines — [4.G.A.1] lines that never meet, and lines that cross at a square corner
• Classifying Triangles — [4.G.A.2] sort triangles by their angles and their sides
• Classifying Quadrilaterals — [4.G.A.2] name four-sided shapes by their sides and angles
• Lines of Symmetry — [4.G.A.3] find the lines that fold a shape onto itself

How to use these worksheets at home

A steady weekly rhythm beats a long weekend session every time. Pick a couple of afternoons, treat one PDF as a single sitting, and stop while it is still going smoothly — about fifteen minutes is right for this age. Consistency, not intensity, is what moves a fourth grader forward.

Pairing skills that build on each other makes the practice feel like a path instead of a pile. Run “Adding Multi-Digit Whole Numbers” and then “Subtracting Multi-Digit Whole Numbers,” and the second worksheet leans on everything the first one set up. The same goes for “Equivalent Fractions” before “Comparing Fractions,” or “Area of Rectangles” right before “Perimeter of Rectangles.” When you pair them deliberately, the first worksheet does some of the teaching for the second.

Keep the answer key until the work is done, then read through it together. In a home in Fresno or a classroom in Sacramento, that review step — talking through why an answer holds up — is where most of the actual learning happens.

It also helps to stay calm when a worksheet goes badly. A page covered in crossed-out work on long division usually means one step — estimating the quotient, or handling the remainder — needs another look, not that division has fallen apart. Because each PDF stays on one skill, that exact trouble spot is easy to find. Give your child the same sheet again later in the week; the second pass is almost always smoother, and seeing that improvement is a quiet lesson in how learning really goes.

A note about CAASPP at Grade 4

California fourth graders take the CAASPP Smarter Balanced Mathematics assessment in the spring. It is built on the California Mathematics Standards, which are aligned to the Common Core, so the skills these worksheets practice and the skills the test measures come from the same source.

The Grade 4 CAASPP asks for more than computation. Students are expected to compare and round multi-digit numbers, multiply and divide with multi-digit numbers, reason about factors, multiples, and prime versus composite numbers, compare and add fractions, work with early decimals, and solve multi-step word problems that require choosing and justifying an approach. It mixes selected-response items with constructed-response and performance tasks. Because each PDF here targets one standard, you can use the set as a checklist — identify the wobbly skill, work just that PDF, and leave the solid ones alone.

A short closing

Fourth-grade math is a year of connections, and a student builds them one skill, one afternoon at a time. Bookmark this page, print a single PDF tonight, and let your child start somewhere small. California kids handle big new ideas well when the next step is clear — and a worksheet on the table is about as clear as it gets.

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